LOUISIANA PURCHASE EXPOSITION, an exposition to commemorate the one hundredth anniversary of the purchase of Louisiana from France. It was held in St. Louis, Mo., from April to December, 1904. There were over five hundred buildings on the grounds containing the exhibits of foreign governments, in addition to the large structures containing the manufactures of the United States. The buildings and grounds covered nearly 1,200 acres. Under the direction of the United States Government were important exhibits of the Philippine Islands. Most of the important tribes sent representatives, together with exhibits showing the state of industry among them.